Core for rolls of paper.



No. 675,077. Patented May 28,1901. G. S. WI'THAM.

CORE FOB ROLLS OF PAPER.

(Application filed. Mar. 26, 1901.)

(No Model.)

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UNTTn STATES ATE T TFTCE.

GEORGE STRONG VVITHAM, OF MADISON, MAINE.

CORE FOR ROLLS OF PAPER.

SPECIFICATION forming part of Letters Patent No. 675,077, dated May 28, 1901.

To all whom it may concern:

Be it known that I, GEORGE STRONG WITH- AM, a citizen of the United States, residing at Madison, in the county of Somerset and State of Maine, have invented certain new and useful Improvementsin Cores for Rolls of Paper, of Which the following is a specification.

The object of my invention is to provide an improved core for large rolls of paper.

Usually large rolls of paper such as are used in large printing-offices are wound on a core either of Wood or paper. Paper cores have been extensively used; but they have not been suitable for direct attachment to the supporting-shaft from which the paper is unwound to the press, and they have not been strong enough to withstand the pressure to which they are subjected and in practice often become flattened and broken, so that frequently they are not capable of reuse and are only good for the paper-stock which they contain. It has been proposed to provide paper cores with metal bushings at opposite ends; but such plans as have been proposed for so constructing the cores involve means for securing the bushings to the core after the formation of the core, while by my invention the bushings are first provided with attaching devices and paper is Wound on the bushings and attached thereto during the process of winding the paper to form the core.

In the accompanyingdrawings, Figure l is a perspective view of one of the bushings which I employ. Fig. 2 shows a cross-section of a core constructed in accordance with my invention. Fig. 3 shows a longitudinal section through one end of the core. Fig. 4 is a diagram illustrating the manner of constructing my improved core.

I employ a metal bushing A at eachend of the core. This bushing is preferably made of cast-iron of suitable interior diameter to fit the shaft which supports the roll of paper while being fed to the printing-machine, and it is provided with a recess a to receive a key by means of which the core may be attached to the shaft. Each bushing is provided with a number of spikes B, which are preferably conical in form, having sharp outer ends, while their inner ends are rigidly secured to the bushing. These spikes may be formed Application filed March 26, 1901.

integrally with the body of the bushing; but

Serial No. 53,009. (No model.)

preferably they are made separately and are separately attached to the core in such manner as to be securely fastened to it. They may be inserted from the inside and driven firmly into holes formed in the bushing, or they may be driven into holes from the outside. The holes may be made to taper, and thus a more secure connection may be made between the spikes and the bushing.

The body of the core is made of paper 0,

wound upon the bushings and pierced by the spikes. The paper is preferably wound on while still soft, and glue is applied to the paper before it is wound. By this means a very strong and solid core may be built up, and at the same time the core may be fastened to the bushings, the separate layers of paper being pierced by the spikes in the process of winding. Preferably the spikes pierce only a portion of the layers of the core, the other unpicrced layers covering the points of the spikes.

In Fig. 4 I have illustrated the manner of constructing the core. The bushings A, car-- rying the spikes, are first secured at proper distances apart on the shaft D. The end of the paper 0 while still wet and with glue applied to it is then attached to the bushings, after which the shaft D is revolved in the direction indicated by the arrow, and successive layers of paper are wound around the bushings and pierced by the spikes while being so wound. After a number of layers have been pierced by the spikes a number of other layers are wound on the core until the desired diameter is reached. Pressure may be applied to the paper while being wound in order to produce a better union between the layers.

It will be observed that after the paper is wound the core is complete and ready for use. It is not necessary to shape the paper core to receive the bushings, and the bushings do not have to be driven into the ends of the core after the latter is formed; nor is it necessary to secure the core to the bushings by any additional fastening devices, as the spikes on the bushings are found to be entirely sufficient for this purpose.

I claim as my invention 1. A core for paper-rolls comprisinga bushing at each end, having outwardly-projecting spikes with sharp outer ends, rigidly secured t to it, and a sleeve consisting of layers of paper wound upon the bushings and pierced by the spikes.

while wet upon the bushings and pierced by the spikes While being so Wound.

4. Acore for paper-rolls comprisinga bushing at each end having sharp-pointed outwardly-projecting spikes inserted into it from the outside, and a sleeve consisting of layers of paper wound upon the bushings and pierced by the spikes.

In testimony whereof I have hereunto sub- I scribed my name.

GEORGE STRONG WITHAM. Witnesses:

CLARK G. BOVEE, BRYCE K. EDWARDS. 

